> Sadly they went out of business as it was a fairly niche product and pretty expensive. However, their Android app is still on Google Play, and you can find u

> Sadly they went out of business as it was a fairly niche product and pretty expensive. However, their Android app is still on Google Play, and you can find used models on eBay. There's also a cottage industry making replacement headbands (which wear out). At least there was 3-4 years ago when I last used mine. I haven't tried it since.